Pneumatic tire for vehicle-wheels.



W. BELDAM.

PNEUMATIC TIRBFOR VEHICLE WHEELS. APPLIOATION FILED Nov.'12, 1909.

950,429. Patehted Feb.'22, 1910 I aw ram;

' the county of Middlcsex, England, have inage from objects over which it is running;

devices embedded in the tire.

or tread portions of same, and studs, which panying drawings, 'scription ot means for preventing skidding j tion. Fi 7 is a )lan of Fi. 6. t) 1' tinrrnn STATES Pair-E anion.

GEORGE WILLIAM 'BELnA-M, or EALING. ENGLAND.

PNEUMATIC TIRE FOR VEHICLE-WHEELS Application filed November To all 'llht/HL it may concern: l

'Be it known that I. Grocer. irritant Bninnt. a subject of the King (it Great Britain and lreland, residing at Eating. in I rented new and useful Improvements in or I Connected with Pneumatic {Fires for Yehicle-\Vheeis, of which the following is a specification.

This invention has reference to pneumatic tires used in connection with wheels-0t settprt'ipelled vehicles, in which studs are cmployed on the periphery, and serve as a means of preventing side-slipping or skid ding oi the tire upon the surface of the road, and protecting it againstpuncture or dam and has reference more particularly to such tires, provided with hollow or solid studs or The object of the present invention is primarily, among others, to provide unprovements in connection with such studded tires,

shall have a less wearing and cutting up or dan'iaging ell'cct upon the roads, tlianthose now in use; while, at the same time. they will be more effective as a side-slipping or skidding preventing means, when they act assuch.

The invention is illustrated in the accomand in the following deand side-slipping, Figure 1 is a cross sec tional view of theinrention. Fig. 2 is a plan view of the stud shown in Fig. 1. Fig. 3 is a view like Fig. 1 but showing a modification. F'g. 4 is a like view of another.modification. Fig. 5 is a plan view of Fig. 4:. Fig. (1 is a view like Fig. 4 of still another modifit-zn Referring to the drawings, in which various modifications of the invention arc'illustrated, Fig. 1 is a. cross sectional View of a pneumatic tire or tread showing a nonslipping metalprctcrably hard steel-stud or device in position, and of the formshown inplan in Fig. 2. The base plate r/ of the device is provided with upwardly projecting side cheek portionsii, and the base It has holes (1 formed in it. This base part a is embedded in and is practically integral with, thatis, in one width, the india-rubbcr or other tread (Z of the tire, with the exception of the projecting cheek parts I) thereof, which I Specification of Letters Patent.

being practically continuations of are flush or practically flush and hug closely the sides of the tread (Z of the tire at the outer edges or sides. which project or stand up 'ard T he faces the direction of rotation of the wheel, it desired, to conform with the surface of the tire tread (.1. The stud devices are molded or built. into the fabric of the tire, and are integral therewith; and by forming the holes r' in the part a, the material tornnng the tire trend is connected on each side of the base part athrough the holes.

In Fig. 2, the dotted line represents a modified fOll-D of the base part a. The base part a may be curved to conform to the general shape of the tire, or it may be plain, or any suitable shape.

Patented Feb. 22, 1910. 12, 1909. Serial No. 527.687.

The construction in Fig. 3 is similar to that previously described, with the exception that the part a as well as the cheek parts 7), are formed of corrugated metal as shown.

The construction shown in Figs. at and 5 is that which may be adopted when the tire is built up of different laminae adhered together, and is otherwise the same as that shown in Figs. 1 and 2, with the exception that the upwardly projecting checks or parts I of the metal stud or device are of curved shape forming part of a circle instead of straight, and they are provided at the base with portions a, which, as well as the base part a, are below or within, and integral with, the rubber or fabric of the tire; and

the outer edges oi. the metal cheeks Z), and

the tread rubber (I, are practically tiush or parallel in this case also, the faces of the cheeks i) may be slightly convex in thc'direction of rotation of the wheel.

The modified construction shown in Figs. 6 and 7 is similar to thatshown in Figs. 1 and 2, with the exception that the extensions a wardly projecting checks or parts 6, they the base part By the above described constructions, when a skid or side slip takes place, the outward projecting check or portion 6 of the steel or metal stud or device, which is at that side toward which the skid or slip is taking place, acts as a prcventer of such side slip, engaging with and. gripping the surface of theroad; while, under normal COIldl tlOllS of runnin there will not be a severe contact of bar steel or metal surface which will act upon the road, the wheel mostly running on the rubber or other soft material 'd of the tire or tread, and the projecting cheek portions 1) only engaging with,

the road surface when the' lateral movenlent of the wheel relatively to the road occurs. And as the surface oflthe' tread d wears,-

@thB stud device parts I) wear with it, and

'" will always continue to act in the same man- ]ner, and with complete efiic1ency, as when new.. i v t The tire may be nolded with the metalsay steelstud devices in it; or, the whole may be built up in any suitable known 'Way. For instance, the rubber part (or rubber and canvas) of' the tread may be bullt up in sections, each section accordin to its length, containing one ormore s'tee z'non-skid studs (as described), which are let in fro n'underneath at regular intervals,

(accordin' to the' size of the non-skiddesections are vulcanized to each other and on to the foundation part of the tire,;they form a; complete homogeneous tire, in which the stud-non-skid parts are secured as an integral part of .'the" tire,vby a continuous ban v only broken by the cheek'surfaees b on each I side of the tread d, which are flush with it.

I What is claimed is of rubber, the continuity of which is y In a vehicle wheel tire, stud devices spaced I [from one another circumferentially of the tire consistingiof. a base portion a, and side I cheek portions 6 formed on and ro ectIng outward from the base a, enibed ed in the i stantiallyas described. I In testimony whereof I- have signed my name to this specification in the presenceof two subscribing witnesses.

GEORGE WILLIAM BELDAM.

Witnesses:

H. l). Jameson,

.vice, whic varies with the size of the tire), the base a fitting into a recessed part, and thecheeks b fitting exactly in" slots in the side portions'of thesections. When these I FL L. RAND. 

